#25591: Cannot QuerySet.update DateRangeField using F() expressions
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Reporter: synotna | Owner: nobody
Type: Uncategorized | Status: new
Component: Uncategorized | Version: 1.8
Severity: Normal | Resolution:
Keywords: | Triage Stage: Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by jarshwah):
I do think that `F()` objects make sense here, but they're going to have
to go through a custom TypeRange() expression. We could and should handle
this internally though. Users shouldn't need to know whether or not they
need to import `XRange` from `psycopg` or from `contrib.postgres` based on
whether or not they want to support F().
I'm not intimately familiar with the contrib.postgres module, so I'm not
sure if the psycopg2.extras.XRange types are usually imported by users or
not.
`RangeField` already has a `get_prep_value` which then wraps the values in
the underlying `psycopg` types. It could inspect the content of `value`
and then wrap inside a custom range_type_expression rather than
range_type.
This is just throwing ideas at a wall though. I'd be interested in what
Marc Tamlyn has to say.
Also, fwiw, your `DateRange` Func above does not need to define `template`
as that's exactly the default anyway.
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Ticket URL: <https://code.djangoproject.com/ticket/25591#comment:3>
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